From b5841bd227fa0024c3464cb9fc64b2c4ccebbf8a Mon Sep 17 00:00:00 2001
From: valentin gagarin <valentin.gagarin@tweag.io>
Date: Wed, 13 Nov 2024 15:24:41 +0100
Subject: [PATCH] add stylesheet with fonts

---
 presentation/style.css     | 12 +++++++++
 presentation/style.nix     | 53 ++++++++++++++++++++++++++++++++++++++
 presentation/templates.nix |  3 ++-
 structure/assets.nix       |  3 +--
 structure/default.nix      |  2 +-
 structure/page.nix         |  4 +++
 6 files changed, 73 insertions(+), 4 deletions(-)
 create mode 100644 presentation/style.css
 create mode 100644 presentation/style.nix

diff --git a/presentation/style.css b/presentation/style.css
new file mode 100644
index 00000000..b0e81a04
--- /dev/null
+++ b/presentation/style.css
@@ -0,0 +1,12 @@
+body {
+  font-family: Heebo, sans-serif;
+  padding: 1em;
+  max-width: 50em;
+  margin: auto;
+}
+
+h1, h2, h3, h4, h5, h6
+{
+  font-family: Signika, sans-serif;
+}
+
diff --git a/presentation/style.nix b/presentation/style.nix
new file mode 100644
index 00000000..c90038dd
--- /dev/null
+++ b/presentation/style.nix
@@ -0,0 +1,53 @@
+{ config, lib, pkgs, ... }: {
+  config.assets."style.css".path = ./style.css;
+  config.assets."fonts.css".path = with lib; builtins.toFile "fonts.css" (join "\n" (map
+    (font: ''
+      @font-face {
+        font-family: '${font.name}';
+        font-style: normal;
+        font-weight: ${toString font.weight};
+        src: url(/${head config.assets.${font.file}.locations}) format('woff2');
+      }
+    '')
+    (
+      (crossLists (name: file: weight: { inherit name file weight; })
+        [ [ "Signika " ] [ "signika-extended.woff2" "signika.woff2" ] [ 500 700 ] ]
+      )
+      ++
+      (crossLists (name: file: weight: { inherit name file weight; })
+        [ [ "Heebo " ] [ "heebo-extended.woff2" "heebo.woff2" ] [ 400 600 ] ]
+      )
+    )
+  ));
+
+  # TODO: get directly from https://github.com/google/fonts
+  #       and compress with https://github.com/fonttools/fonttools
+  config.assets."signika-extended.woff2" = {
+    path = pkgs.fetchurl {
+      url = "https://fonts.gstatic.com/s/signika/v25/vEFO2_JTCgwQ5ejvMV0Ox_Kg1UwJ0tKfX6bOjM7sfA.woff2";
+      hash = "sha256-6xM7cHYlTKNf1b0gpqhPJjwOoZfxx9+u1e4JPYG2lKk=";
+      name = "signika-extended.woff2";
+    };
+  };
+  config.assets."signika.woff2" = {
+    path = pkgs.fetchurl {
+      url = "https://fonts.gstatic.com/s/signika/v25/vEFO2_JTCgwQ5ejvMV0Ox_Kg1UwJ0tKfX6bBjM4.woff2";
+      hash = "sha256-Yu0kGT3seb8Qtulu84wvY6nLyPXsRBO/JvTD2BQBtHg=";
+      name = "signika.woff2";
+    };
+  };
+  config.assets."heebo-extended.woff2" = {
+    path = pkgs.fetchurl {
+      url = "https://fonts.gstatic.com/s/heebo/v26/NGS6v5_NC0k9P9H2TbE.woff2";
+      hash = "sha256-lk3+fFEqYWbHHGyXkdhKnOOMGS9m5ZbbxQcRQCSlxDE=";
+      name = "heebo-extended.woff2";
+    };
+  };
+  config.assets."heebo.woff2" = {
+    path = pkgs.fetchurl {
+      url = "https://fonts.gstatic.com/s/heebo/v26/NGS6v5_NC0k9P9H4TbFzsQ.woff2";
+      hash = "sha256-JWnjYlbcNsg6KCJnRRjECL2HnZGJOBTMtdutWBNza4Q=";
+      name = "heebo.woff2";
+    };
+  };
+}
diff --git a/presentation/templates.nix b/presentation/templates.nix
index d23ee1fb..6a588596 100644
--- a/presentation/templates.nix
+++ b/presentation/templates.nix
@@ -55,7 +55,8 @@ in
       # TODO: create static redirects from `tail <collection>.locations`
       (acc: elem: acc // (mapAttrs' (type: value: {
         name = head elem.locations + optionalString (type != "") ".${type}";
-        value = builtins.toFile
+        value = if isStorePath value then value else
+        builtins.toFile
           (elem.name + optionalString (type != "") ".${type}")
           (toString value);
       }))
diff --git a/structure/assets.nix b/structure/assets.nix
index ff534286..11b143fb 100644
--- a/structure/assets.nix
+++ b/structure/assets.nix
@@ -16,8 +16,7 @@ in
       options.path = mkOption {
         type = types.path;
       };
-      config.name = builtins.baseNameOf config.path;
-      config.outputs."" = builtins.readFile config.path;
+      config.outputs."" = if lib.isStorePath config.path then config.path else "${config.path}";
     }));
     default = { };
   };
diff --git a/structure/default.nix b/structure/default.nix
index a13bb95f..232c6f1e 100644
--- a/structure/default.nix
+++ b/structure/default.nix
@@ -74,7 +74,7 @@ in
         description = ''
           Representations of the document in different formats
         '';
-        type = with types; attrsOf (either str attrs);
+        type = with types; attrsOf (either attrs pathInStore);
       };
     };
   };
diff --git a/structure/page.nix b/structure/page.nix
index 3578385b..8b9cf17e 100644
--- a/structure/page.nix
+++ b/structure/page.nix
@@ -54,6 +54,10 @@ in
         title.text = page.title;
         meta.description = page.description;
         link.canonical = lib.head page.locations;
+        link.stylesheets = [
+          { href = "${page.link cfg.assets."style.css"}"; }
+          { href = "${page.link cfg.assets."fonts.css"}"; }
+        ];
       };
       body.content = [
         (cfg.menus.main.outputs.html page)